the great thing about Christmas dinner is that it always contains a few things you don't like

Clearly this is well meant, but also complete anathema to this particular Christmas dinner glutton who will joyfully clear his plate of everything at least twice.

Embued with a spirit of shared scientific endeavour I have calculated that the overall distance you'd need to walk to shake off the weight of dinner (and a whole pound of sweeties) is about 55 miles. Blimey.

Which is fine and dandy if you're a walking enthusiast, but there are plenty of other ways of burning off the 5,000-odd calories involved. What do you do?